METHOD FOR PRODUCING DIESEL FUEL FROM SOLID synthetic hydrocarbons obtained by the Fischer-Tropsch synthesis, and catalysts FOR ITS IMPLEMENTATION

摘要

FIELD: machine building.;SUBSTANCE: method for obtaining diesel fuel from solid synthetic hydrocarbons obtained as per Fischer-Tropsch method is described. It involves hydrocracking/isodewaxing of solid hydrocarbons on a catalyser containing a carrier and a plate; at that, the carrier is made from mixture of 10-40% zeolite SAPO-41 and γ-Al₂O₃, and platinum content is 0.2-0.4% at pressure of 1-6 MPa, temperature of 340-420°C, volume feed velocity of hydrocarbons of 0.5-1.5 h^-1, the ratio of hydrogen:hydrocarbons of 800-1200:1 nl/l with further extraction by rectification from hydrocracking products of the fraction of 180°-360°C, which is subject to hydrofinishing on a palladium catalyser containing 0.5 to 1.5 wt % of palladium applied to the carrier made from γ-Al₂O₃ with effective pore radius of 4.0-10.0 nm; at that, hydrofinishing process is performed at the temperature of 150-250°C, pressure of 2.0-4.0 MPa, volume feed velocity of the extracted fraction of 1.0-15.0 h^-1, at the ratio of hydrogen:fraction of 300-800:1 nl/l. Besides, a catalyser is described, which is used for implementation of hydrocracking/isodewaxing stage of the above method.;EFFECT: increase in yield of target fraction at improvement of catalytic activity of the catalyser.;2 cl, 1 tbl, 6 ex